diff options
| author | David Sterba <dsterba@suse.com> | 2019-10-02 00:06:15 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-11-18 12:46:57 +0100 |
| commit | 1e4eb7465438e47cc3718a02d4326dd034f3c0da (patch) | |
| tree | 35ba323e319d89f15c3c45133144fa23dd96cbae /fs/btrfs/compression.h | |
| parent | c4bf665a3197554a696121d20f3bf11d084a6961 (diff) | |
btrfs: switch compression callbacks to direct calls
The indirect calls bring some overhead due to spectre vulnerability
mitigations. The number of cases is small and below the threshold
(10-20) where indirect call would be better.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/compression.h')
| -rw-r--r-- | fs/btrfs/compression.h | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index 52dce1176f89..7db14d3166b5 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -140,23 +140,6 @@ struct btrfs_compress_op { void (*free_workspace)(struct list_head *workspace); - int (*compress_pages)(struct list_head *workspace, - struct address_space *mapping, - u64 start, - struct page **pages, - unsigned long *out_pages, - unsigned long *total_in, - unsigned long *total_out); - - int (*decompress_bio)(struct list_head *workspace, - struct compressed_bio *cb); - - int (*decompress)(struct list_head *workspace, - unsigned char *data_in, - struct page *dest_page, - unsigned long start_byte, - size_t srclen, size_t destlen); - /* Maximum level supported by the compression algorithm */ unsigned int max_level; unsigned int default_level; |